Marie-Clare Shanahan interviewed yours truly for last week’s broadcast of Skeptically Speaking, and it’s now available as a podcast. We talked about the genesis of Per Square Mile, income inequality, ghosts of geography, and why we need more urban ecology.

My bit starts just after the 40 minute mark, but if you have time, be sure to catch the preceding interview with Scott Huler, author of On the Grid, a well-researched book about, well, the grid. Plus, Scott’s just great on the air.